Colby, KS Radon Mitigation and Testing

Q: What EPA Radon Zone is Colby in?

Colby is in Thomas County, EPA Zone 1.

Q: How much does radon mitigation cost in Colby?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Thomas County

EPA Zone 1

Established in northwest Kansas's Thomas County, Colby sits atop High Plains geology in EPA Zone 1 where Cretaceous and Tertiary formations can produce elevated radon levels. This agricultural hub around zip code 67701 features primarily single-family homes and farm properties with varied foundation types. Given the absence of comprehensive testing data and Kansas's elevated radon potential, residents should prioritize professional radon testing to establish whether mitigation measures might be beneficial.

Colby, KS Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Colby, KS Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Colby Radon Facts

Key details about the radon risk profile for Colby and the 67701 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Thomas County, KS

Zip Code

67701

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Colby and the 67701 zip code are located in Thomas County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Colby, KS

What EPA Radon Zone is Colby in?

Colby and the 67701 zip code are in Thomas County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Colby?

Radon mitigation in Colby typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Colby?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in Kansas

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Topeka	6.00 pCi/L	1
Overland Park	No submissions	0